建筑热水管系图式分析与运行调试

建筑热水管道系统是在环状管网条件下运行，其立管流量受环参数的影响，在原枝状管系条件下得到的设计流量值基础上重新分配。经分析发现，将热水的接入点和回水接出点分设在管系的两端，是最佳的管系图式。此时．最不利供水立管已不在系统的最远端．而是位于管系中部的立管．随着立管数量的增加，管系各立管配水流量的不均匀性也急剧增大，其相应的系统运行调试工作可参考本文中“热水立管局部阻力系数加载参考表”所提供的数据．将管系中部的主管作为基准来进行。

Pipe System Design and Adjustment for Hot-water Supply in Buildings

The daily-use hot water supply in buildings is operated in a loop system of pipe network. The water flow in the verticalpipes will be determined by the circut parameters and be redistributed on basis of design now value obtained under primitive conditionsof branch pipe system. Through investigation, it has been found that the optimum pattern of pipe system is to set the hot-water inletand return-water outlet at the terminals of the pipe system, and the most un favorable vertical pipes for water supply will ie located notat the terminals, but at the central location of the system. Accompanying the increase in number of vertical pipes, unevenness of waterflow would be sharply greater. Referring to the data presented in the reference Table of "local resistance in hot-water vertical pipesonload", the corresponding adjustment and regulation of the system operation can be taken the vertical pipe at the central location as thedatum.